Which of the following situations generally exists when deflation occurs? 1.inflation and unemployment are both increasing 2. the natural rate of unemployment is zero 3.the rate of inflation is...

Which of the following situations generally exists when deflation occurs? 1.inflation and unemployment are both increasing 2. the natural rate of unemployment is zero 3.the rate of inflation is falling from, for example, 10% to 3% 4.the price level is decreasing 5.inflation and unemployment are both decreasing